ARCH Venture Fund X, L.P.

CIK: 0001757011

Transaction Breakdown

Open Market Buys (P)3 (25.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)9 (75.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ASPE

Aspen Neuroscience, Inc.

10% Owner

Discretionary Trading P&L

Holdings

Transaction History (12 total)

ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Purchase(P)
Direct
66.7K shares at avg. $15.00$1000K
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
187.2K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
298.3K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
286.3K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
295.5K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
259.9K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Purchase(P)
Direct
66.7K shares at avg. $15.00$1.0M
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
298.3K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
286.3K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
295.5K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Conversion(C)
Direct
214.4K shares-
ASPE
Aspen Neuroscience, Inc.
Nov 2, 2026
Purchase(P)
Indirect
1.2M shares at avg. $15.00$18.0M

		Type	Shares	Price		Ownership
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Purchase(P)	66,666	$15.00	$999,990	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	187,182	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	298,258	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	286,304	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	295,490	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	259,948	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Purchase(P)	66,667	$15.00	$1,000,005	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	298,258	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	286,304	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	295,490	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Conversion(C)	214,355	-	$0	Direct
Nov 2, 2026	ASPE Aspen Neuroscience, Inc.	Purchase(P)	1,200,000	$15.00	$18,000,000	Indirect

1-12 of 12 transactions

About ARCH Venture Fund X, L.P.

ARCH Venture Fund X, L.P. (SEC CIK 0001757011) files insider reports with the SEC as 10% Owner of Aspen Neuroscience, Inc. (ASPE).

Signal8 holds 2 ownership filings by ARCH Venture Fund X, L.P. (1 Form 3, 1 Form 4), filed between Oct 29, 2026 and Nov 2, 2026. Those filings report 12 transactions, the latest on Nov 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on ARCH Venture Fund X, L.P.'s filings is in CHICAGO, IL.

Recent filings by ARCH Venture Fund X, L.P.

Nov 2, 2026: Open-market purchase of ASPE shares (Form 4, code P).
Nov 2, 2026: Conversions of ASPE shares (5 lines, Form 4, code C).
Nov 2, 2026: Open-market purchase of ASPE shares (Form 4, code P).
Nov 2, 2026: Conversions of ASPE shares (4 lines, Form 4, code C).
Nov 2, 2026: Open-market purchase of ASPE shares (Form 4, code P).

Other insiders filing for Aspen Neuroscience, Inc. (ASPE)

ARCH Venture Partners XIV, L.P., 10% Owner
Spaventa Andrew, Director
Hasnain Faheem, Executive Chair
ORBIMED ADVISORS LLC, Director
Boerneke Jeffrey Lee, General Counsel and Secretary
Daniel Thomas O, Director

How to read Form 4 transaction codes